Nevertheless, Jim and Martin gently tap themselves into the unrealistic Kontron tunnel of the title to see if they can't discover a gem or two.

Baker's baubles get harnessed and Peri unleashes her inner damsel in distress, while Avon dons a Dick 3 wig and channels Henry Irving.

The toga-togged Karfelans are menaced from above by Muppet cobras and from below by overgrown slowworms, little knowing that their dastardly dictator is actually half the man he used to be.

Can the Doctor free them from this terrifying regime, where beekeepers and body-popping androids are a pain in the neck and where 'Tinsel Inside' is considered the highest mark of quality for time technology?